I had unprotected sex on April 30th its not may 6th on the 4th and 5th I had experienced some pains in my lower tummy could this be a sign of pregnancy

sex = pregnancy, wait and see if you missed your next period and test for pregnancy then.

Possibly, but highly doubtful. And the fact that you're referring to it as tummy pains suggests your far to young to be having sex let alone unprotected sex. If you don't want a child which by the phrasing of the question you're too young for a child then get on the pill or shot and use condoms. Get a test to be sure or wait for your period. It's probably too early for a test to pick it up just yet. So, I'd just wait for your period. But, don't stress yourself into false symptoms. It happens you go to websites look at the symptoms and all of a sudden you have them all. You can make yourself have symptoms if u stress enough. Not to mention if you stress about it, it could cause your period to be late or irregular for you. Stress can be a factor in that.